package com.carl.bigdata;

import com.alibaba.fastjson.JSON;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanListHandler;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.sql.SQLException;
import java.util.List;

@WebServlet("/getCitys")
public class CityServlet extends HttpServlet {
    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.setContentType("application/json;charset=utf-8");
        String pid = req.getParameter("pid");
        QueryRunner queryRunner = new QueryRunner(DataSourceUtil.getDataSourceUtil());
        String sql = "select * from city where pid=?";
        try {
            List<City> cities = queryRunner.query(sql, new BeanListHandler<City>(City.class), pid);
            String jsonString = JSON.toJSONString(cities);
            resp.getWriter().print(jsonString);
        } catch (SQLException e) {
            e.printStackTrace();
        }

    }
}
